Evaluation of cyanobacterial endolith Leptolyngbya sp. ISTCY101, for integrated wastewater treatment and biodiesel production: A toxicological perspective

Singh, Jaswant; Thakur, Indu Shekhar

doi:10.1016/j.algal.2015.07.010

Cited by 58 publications

(21 citation statements)

References 60 publications

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“…The maximum attached biomass productivity recorded for the experimental sets DWW-C and MWW-A, reaching the values of 5.03 and 4.12 g m −2 day −1 , respectively. Specific growth rate values ranged from 0.217 to 0.925 day −1 (Table 4), which are values higher than those previously recorded for attached Leptolyngbya-based cultures (0.369 day −1 by Singh and Thakur [38] using municipal wastewater as substrate), as well as suspended growth Leptolyngbya-based cultures (0.24-029 day −1 using winery substrate or 0.16-022 day −1 using mixed winery-raisin substrate by Tsolcha et al [1]. It should be mentioned that autotrophic experiments performed with chemical media containing minerals with the same initial N:P ratio used in the DWW and MWW experiments, presented lower biomass productivities of between 1 and 2.2 g m −2 day −1 (data not shown).…”

Section: Microbial Growthmentioning

confidence: 51%

“…High total lipid content values were also recorded in MWW-C (18.6% d.w.) and MWW-A (16.2% d.w.). However, values of attached lipid content were highest in set WWW-A where they reached a maximum of 23.2% d.w. Singh and Thakur [38] were also found similar lipid contents (24.8% d.w.) for Leptolyngbya sp. A Leptolyngbya-based microbial consortium in a suspended growth system and using winery wastewater as substrate presented lower values of lipid content ranging between 7 and 11% d.w. [1].…”

Section: Lipid Production/fatty Acid Profilementioning

confidence: 59%

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Agroindustrial Wastewater Treatment with Simultaneous Biodiesel Production in Attached Growth Systems Using a Mixed Microbial Culture

Tsolcha

Tekerlekopoulou

Akratos

et al. 2018

Water

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The use of cyanobacteria in biological wastewater treatment technologies can greatly reduce operation costs by combining wastewater bioremediation and production of lipid suitable as biodiesel feedstock. In this work, an attached growth system was employed to achieve the above-mentioned dual objective using a mixed microbial culture dominated by Leptolyngbya and Limnothrix species in diverse heterotrophic consortia. Kinetic experiments on different initial pollutant concentrations were carried out to determine the ability of the established culture to remove organic load (expressed by d-COD, dissolved-Chemical Oxygen Demand), N and P from agroindustrial wastewaters (dairy, winery and raisin). Biomass and oil productivity were determined. It was found that significant removal rates of nutrients were achieved in all the wastewaters examined, especially in that originated from winery in which the highest d-COD removal rate (up to 97.4%) was observed. The attached microbial biomass produced in winery wastewater contained 23.2% lipid/biomass, wt/wt, which was satisfying. The growth in the dairy wastewater yielded the highest attached biomass productivity (5.03 g m−2 day−1) followed by the mixed effluent of winery-raisin (4.12 g m−2 day−1) and the winery wastewater (3.08 g m−2 day−1). The produced microbial lipids contained high percentages of saturated and mono-unsaturated fatty acids (over 89% in total lipids) in all substrates examined. We conclude that the proposed attached growth photobioreactor system can be considered an effective wastewater treatment system that simultaneously produces microbial lipids suitable as biodiesel feedstock.

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Section: Microbial Growthmentioning

confidence: 51%

Section: Lipid Production/fatty Acid Profilementioning

confidence: 59%

Agroindustrial Wastewater Treatment with Simultaneous Biodiesel Production in Attached Growth Systems Using a Mixed Microbial Culture

Tsolcha

Tekerlekopoulou

Akratos

et al. 2018

Water

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“…Microalgae do not require arable land and are capable of surviving well in places that other crop plants cannot inhabit, such as saline-alkaline water, land and wastewater (Searchinger et al, 2008;Wang et al, 2008). Furthermore, microalgae can be fed with notorious waste gasses such as CO 2 and NO x , SO x from flue gas, inorganic and organic carbon, N, P and other pollutants from agricultural, industrial and sewage wastewater sources so as to provide us with opportunities to transform them into bioenergy, valuable products and forms that cause least harm to the environment (Chisti, 2007;Hu et al, 2008;Pires et al, 2012;Singh and Thakur, 2015). The uncomplicated cellular structures and rapid growth of microalgae endow them with CO 2 fixation efficiency as higher as 10-50 folds than terrestrial plants (Li Y. et al, 2008;Khan et al, 2009).…”

Section: Co 2 Capture By Microalgaementioning

confidence: 99%

“…In this context emphasis is being laid on biofilm based attached cultivation rather than aquasuspend methods that have massive water requirement, low biomass productivity, energy intensive and cannot be easily scaled up (Kesaano and Sims, 2014;Wang et al, 2017). Microalgal production using wastewater from industrial, agricultural and sewage sources is a promising way to reduce the ecological footprints substantially (Pires et al, 2012;Singh and Thakur, 2015). Digestates, effluents from biogas production units and AD (containing concentrated nutrients including nitrogen in the form of ammonia, potassium, phosphorous, sulfur, and recalcitrant organic substances), are also being used in microalgal cultivation systems.…”

Section: State-of-the-artmentioning

confidence: 99%

Overview of Carbon Capture Technology: Microalgal Biorefinery Concept and State-of-the-Art

2019

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The impending danger of climate change and pollution can now be seen on the world panorama. The concentration of CO 2 , the most important Green House Gas (GHG), has reached to formidable levels. Although carbon capture and storage (CCS) methods have been largely worked upon, they are cumbersome in terms of economy and their long term environmental safety raises a concern. Alternatively, bio-sequestration of CO 2 using microalgal cell factories has emerged as a promising way of recycling CO 2 into biomass via photosynthesis which in turn could be used for the production of bioenergy and other value-added products. Despite enormous potential, the production of microalgae for low-value bulk products and bulk products such as biofuels, is heretofore, not feasible. To achieve economic viability and sustainability, major hurdles in both, the upstream and downstream processes have to be overcome. Recent technoeconomic analyses and life-cycle assessments of microalgae-based production systems have suggested that the only possible way for scaling up the production is to completely use the biomass in an integrated biorefinery setup wherein every valuable component is extracted, processed and valorized. This article provides a brief yet comprehensive review of the present carbon sequestration and utilization technologies, focusing primarily on biological CO 2 capture by microalgae in the context of bio-refinery. The paper discusses various products of microalgal biorefinery and aims to assess the opportunities, challenges and current state-of-the-art of microalgae-based CO 2 bioconversion, which are essential to the sustainability of this approach in terms of the environment as well as the economy.

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“…Leptolyngbya HS-16 is an isolate that had been isolated from hot spring in Red Crater of Gunung Pancar, Sentul, Bogor [4]. As mats-producing microalgae, Leptolyngbya was a promising source of biofuel [5]. Biomass from Leptolyngbya could produce lipid and after going through a few process, they could be used as biofuel.…”

Section: Introductionmentioning

confidence: 99%

Effects of aeration intensity as agitation in simple photobioreactors on leptolyngbya (cyanobacteria) growth as biofuel feedstock

et al. 2018

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Indonesia known as a hotspot of biodiversity, including cyanobacteria biodiversity. One member of cyanobacteria (prokaryotic algae) is Leptolyngbya. Leptolyngbya HS-16 is an isolate that had been isolated from hot spring in Red Crater of Gunung Pancar, Sentul, Bogor. As mats-producing microalgae, this strain is a very promising source of Biofuel. Biofuel can be extracted from lipid of microalgal biomass. Bioreactor is a method to encourage the growth of microalgal biomass. To get a best result in growth, agitation must be done, to make sure every single cell of microalgae gets the adequate nutrition. The aeration on simple photobioreactors is set to high and low intensity. The high intensity of aerations average amount are 191 bubble/min, while the low intensity one are 117 bubble/min, with a device that could produce smaller bubble size to reduce the aeration-agitation effect. The research was done to acknowledge the effect of aeration intensity to Leptolygnbya HS-16.

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Evaluation of cyanobacterial endolith Leptolyngbya sp. ISTCY101, for integrated wastewater treatment and biodiesel production: A toxicological perspective

Cited by 58 publications

References 60 publications

Agroindustrial Wastewater Treatment with Simultaneous Biodiesel Production in Attached Growth Systems Using a Mixed Microbial Culture

Agroindustrial Wastewater Treatment with Simultaneous Biodiesel Production in Attached Growth Systems Using a Mixed Microbial Culture

Overview of Carbon Capture Technology: Microalgal Biorefinery Concept and State-of-the-Art

Effects of aeration intensity as agitation in simple photobioreactors on leptolyngbya (cyanobacteria) growth as biofuel feedstock

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